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    <title>Document</title>
    <style>
        div{
            width: 100px;
            height: 100px;
            background: pink;
            /* overflow */
            overflow: scroll;
        }
        button{
            width: 100px;
            height: 20px;
        }
        button:hover{
            /* cursor */
            cursor: move;
        }
        input{
            /* outline: 0; */
            /* outline: none; */
        }
        input:focus{
            /* 党获取焦点时，鼠标点击的效果 */
            outline: 3px dashed pink;
        }
        /* 防止拖拽文本域 */
        textarea{
            resize: none;
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        .hidd{
            width: 200px;
            /* height: 400px; */
            background: pink;
            /* 强制一行显示 */
            white-space: nowrap;
            /* 溢出隐藏 */
            overflow: hidden;
            /* 显示隐藏标记... */
            text-overflow: ellipsis;
        }
        img{
            width: 50px;
            /* 过渡动画 */
            transition: all linear 2s;
        }
        img:hover{
            width: 100px;
        }
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<body>
    <div>132145153415151434</div>
    <button>点我点我快点我</button><br>
    <input type="text"><br>
    <textarea></textarea>
    <ul>
        <li  class="hidd">挖掘上党课哈市就啊合适的话还可以点啊我还得萨达挖阿萨的</li>
        <li  class="hidd">挖掘上党课哈市就啊合适的话还可以点啊我还得萨达挖阿萨的</li>
        <li  class="hidd">挖掘上党课哈市就啊合适的话还可以点啊我还得萨达挖阿萨的</li>
    </ul>
    <img src="../img/touxiang.png">
</body>
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